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Pagina 500Smith (1920a, b), however, was able to observe some increase in pigment
granules in explants from 2-day chick embryos. He did not agree that the
granules originated from mitochondria as was believed though not observed by
Luna. 2.

Pagina 564Pigment cells from heavily pigmented areas are filled with pigment granules
which may completely obscure the nucleus and fill the dendrites. Along each
dendrite, granules and clumps of granules distort the cytoplasm giving it a
knobbly ...